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Flights from St Louis Airport to Washington

Flight deals from St Louis Airport to Washington

Looking for cheap tickets from St Louis Airport to Washington, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.
Seattle.£108 per passenger.Departing Mon, 22 Sep, returning Fri, 26 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Mon, 22 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 26 Sep, arriving in St Louis.Price includes taxes and charges.From £108, select.
Spokane.£219 per passenger.Departing Fri, 17 Oct, returning Sat, 25 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Fri, 17 Oct, arriving in Spokane International.Inbound indirect flight with Delta, departs from Spokane International on Sat, 25 Oct, arriving in St Louis.Price includes taxes and charges.From £219, select.
Bellingham.£288 per passenger.Departing Sat, 4 Oct, returning Sat, 11 Oct.Return flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from St Louis on Sat, 4 Oct, arriving in Bellingham.Inbound indirect flight with Alaska Airlines, departs from Bellingham on Sat, 11 Oct, arriving in St Louis.Price includes taxes and charges.From £288, select.
Pasco.£604 per passenger.Departing Tue, 2 Sep, returning Tue, 9 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Tue, 2 Sep, arriving in Pasco.Inbound indirect flight with Delta, departs from Pasco on Tue, 9 Sep, arriving in St Louis.Price includes taxes and charges.From £604, select.
Yakima.£1,351 per passenger.Departing Sat, 27 Sep, returning Mon, 6 Oct.Return flight with Aeromexico and Hawaiian Airlines.Outbound indirect flight with Aeromexico, departs from St Louis on Sat, 27 Sep, arriving in Yakima Air Terminal.Inbound indirect flight with Hawaiian Airlines, departs from Yakima Air Terminal on Mon, 6 Oct, arriving in St Louis.Price includes taxes and charges.From £1,351, select.

Flying from St Louis Airport to Washington

Arm yourself with these facts on the fly.
Cheapest flight found£108, Seattle
Cheapest month to flySeptember
Average flight time4 hrs, 31 mins
Average flights per week119
Most popular airlineAir Tahiti Nui

Frequently asked questions

Yes - direct flights currently operate from St Louis Airport to Seattle / Tacoma International Airport in Washington.
We looked at all of the upcoming return flights from St Louis Airport to Washington we could find over the next 12 months. It looks like £108 is the best price. This is good, compared to the average Washington ticket price of £514.
The cheapest month to fly from St Louis Airport to Spokane International Airport is currently October.
The cheapest month to fly from St Louis Airport to Bellingham Airport is currently October.
The cheapest month to fly from St Louis Airport to Yakima Air Terminal Airport is currently September.
And the cheapest month to fly from St Louis Airport to Seattle / Tacoma International Airport is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from St Louis Airport to Washington on Monday, 22 September 2025.
If you're flying from St Louis, the cheapest city in Washington to fly into is Seattle. The cheapest airport serving Seattle at the moment is Seattle / Tacoma International.
The average flight time between St Louis Airport and Washington is 4 hours and 31 minutes.